Managing Controller Software and Configurations
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- Cori Alexander
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1 CHAPTER 8 Managing Controller Software and Configurations This chapter describes how to manage configurations and software versions on the controllers. This chapter contains these sections: Transferring Files to and from a Controller, page 8-2 Upgrading Controller Software, page 8-2 Saving Configurations, page 8-4 Clearing the Controller Configuration, page 8-4 Erasing the Controller Configuration, page 8-4 Resetting the Controller, page
2 Transferring Files to and from a Controller Chapter 8 Transferring Files to and from a Controller Controllers have built-in utilities for uploading and downloading software, certificates, and configuration files. Use these transfer commands: transfer download datatype transfer download filename transfer download mode transfer download path transfer download serverip transfer download start transfer upload datatype transfer upload filename transfer upload mode transfer upload path transfer upload serverip transfer upload start Upgrading Controller Software Follow these steps to upgrade the controller software using the CLI. Note You can also update the controller software using the GUI or through a wireless connection. However, in these cases, you will lose your connection to the controller sometime during the update process. For this reason, Cisco recommends that you use a direct CLI console port connection to update controller software. Note If there are LAP1231 access points registered to a controller when it is upgraded from software Release 3.2 to Release , these access point might fail to join the controller after the upgrade. The access points might be unable to join the controller because they were unable to the download their new software. Step 1 Make sure you have a TFTP server available for the Operating System software download. Keep these guidelines in mind when setting up a TFTP server: If you are downloading through the Service port, the TFTP server must be on the same subnet as the service port, because the service port is not routable. If you are downloading through the DS (Distribution System) network port, the TFTP server can be on the same or a different subnet, because the DS port is routable. The TFTP server cannot run on the same computer as WCS because WCS and the TFTP server use the same communication port. 8-2
3 Chapter 8 Upgrading Controller Software Step 2 Step 3 Step 4 Step 5 Step 6 Download the desired Operating System software update file from the Cisco website to the default directory on your TFTP server. Log into the controller CLI. Enter ping server-ip-address to verify that the controller can contact the TFTP server. Enter transfer download start and answer n to the prompt to view the current download settings. This example shows the command output: >transfer download start Mode... TFTP Data Type... Code TFTP Server IP... xxx.xxx.xxx.xxx TFTP Path... <directory path> TFTP Filename... AS_2000_3_0_x_x.aes --OR-- AS_4100_3_0_x_x.aes --OR-- AS_4400_3_0_x_x.aes Are you sure you want to start? (y/n) n Transfer Canceled > Enter these commands to change the download settings: transfer download mode tftp transfer download datatype code transfer download serverip tftp-server-ip-address transfer download filename filename transfer download path absolute-tftp-server-path-to-file Note All TFTP servers require the full pathname. For example, in Windows, the path is C:\TFTP-Root. (In UNIX forward slashes / are required.) Step 7 Enter transfer download start to view the updated settings, and answer y to the prompt to confirm the current download settings and start the Operating System code download. This example shows the download command output: transfer download start Mode... TFTP Data Type... Code TFTP Server IP... xxx.xxx.xxx.xxx TFTP Path... <directory path> TFTP Filename... AS_2000_3_0_x_x.aes --OR-- AS_4100_3_0_x_x.aes --OR-- AS_4400_3_0_x_x.aes Are you sure you want to start? (y/n) y TFTP Code transfer starting. TFTP receive complete... extracting components. Writing new bootloader to flash. Making backup copy of RTOS. Writing new RTOS to flash. Making backup copy of Code. Writing new Code to flash. TFTP File transfer operation completed successfully. Please restart the switch (reset system) for update to complete. 8-3
4 Saving Configurations Chapter 8 Step 8 The controller now has the code update in active volatile RAM, but you must enter reset system to save the code update to non-volatile NVRAM and reboot the Cisco Wireless LAN Controller: reset system The system has unsaved changes. Would you like to save them now? (y/n) y The controller completes the bootup process. Saving Configurations Controllers contain two kinds of memory: volatile RAM and NVRAM. At any time, you can save the configuration changes from active volatile RAM to non-volatile RAM (NVRAM) using one of these commands: Use the save config command. This command saves the configuration from volatile RAM to NVRAM without resetting the controller. Use the reset system command. The CLI prompts you to confirm that you want to save configuration changes before the controller reboots. Use the logout command. The CLI prompts you to confirm that you want to save configuration changes before you log out. Clearing the Controller Configuration Follow these steps to clear the active configuration in NVRAM. Step 1 Step 2 Step 3 Enter clear config and enter y at the confirmation prompt to confirm the action. Enter reset system. At the confirmation prompt, enter n to reboot without saving configuration changes. When the controller reboots, the configuration wizard starts automatically. Follow the instructions in the Using the Configuration Wizard section on page 4-2 to complete the initial configuration. Erasing the Controller Configuration Follow these steps to reset the controller configuration to default settings: Step 1 Step 2 Enter reset system. At the confirmation prompt, enter y to save configuration changes to NVRAM. The controller reboots. When you are prompted for a username, enter recover-config to restore the factory default configuration. The controller reboots and the configuration wizard starts automatically. 8-4
5 Chapter 8 Resetting the Controller Step 3 Follow the instructions in the Using the Configuration Wizard section on page 4-2 to complete the initial configuration. Resetting the Controller You can reset the controller and view the reboot process on the CLI console using one of the following two methods: Turn the controller off and then turn it back on. On the CLI, enter reset system. At the confirmation prompt, enter y to save configuration changes to NVRAM. The controller reboots. When the controller reboots, the CLI console displays the following reboot information: Initializing the system. Verifying the hardware configuration. Loading microcode into memory. Verifying the Operating System software load. Initializing with its stored configurations. Displaying the login prompt. 8-5
6 Resetting the Controller Chapter 8 8-6
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